Citation:

s00338-013-1015-3

Name: Stress-tolerant corals of Florida Bay are vulnerable to ocean acidification
Published: 2013
License: https://creativecommons.org/licenses/by/3.0/
Keywords: Animalia; Benthic animals; Benthos; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Cnidaria; Coast and continental shelf; Field experiment; North Atlantic; Primary production/Photosynthesis; Siderastrea radians; Single species; Solenastrea hyades; Temperate

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Abstract:

In situ calcification measurements tested the hypothesis that corals from environments (Florida Bay, USA) that naturally experience large swings in pCO2 and pH will be tolerant or less sensitive to ocean acidification than species from laboratory experiments with less variable carbonate chemistry. The pCO2 in Florida Bay varies from summer to winter by several hundred ppm roughly comparable to the increase predicted by the end of the century. Rates of net photosynthesis and calcification of two stress-tolerant coral species, Siderastrea radians and Solenastrea hyades, were measured under the prevailing ambient chemical conditions and under conditions amended to simulate a pH drop of 0.1-0.2 units at bimonthly intervals over a 2-yr period. Net photosynthesis was not changed by the elevation in pCO2 and drop in pH; however, calcification declined by 52 and 50 % per unit decrease in saturation state, respectively. These results indicate that the calcification rates of S. radians and S. hyades are just as sensitive to a reduction in saturation state as coral species that have been previously studied. In other words, stress tolerance to temperature and salinity extremes as well as regular exposure to large swings in pCO2 and pH did not make them any less sensitive to ocean acidification. These two species likely survive in Florida Bay in part because they devote proportionately less energy to calcification than most other species and the average saturation state is elevated relative to that of nearby offshore water due to high rates of primary production by seagrasses.

Keyword(s):

Animalia; Benthic animals; Benthos; Bottles or small containers/Aquaria (<20 L); Calcification/Dissolution; Cnidaria; Coast and continental shelf; Field experiment; North Atlantic; Primary production/Photosynthesis; Siderastrea radians; Single species; Solenastrea hyades; Temperate

Further details:

Lavigne, Héloïse; Epitalon, Jean-Marie; Gattuso, Jean-Pierre (2014): seacarb: seawater carbonate chemistry with R. R package version 3.0 [webpage]. https://cran.r-project.org/package=seacarb

Project(s):

Ocean Acidification International Coordination Centre (OA-ICC)

Coverage:

Latitude: 24.926000 * Longitude: -80.740000

Date/Time Start: 2007-05-04T00:00:00 * Date/Time End: 2009-03-31T00:00:00

Event(s):

Florida_bay * Latitude: 24.926000 * Longitude: -80.740000 * Date/Time Start: 2007-05-04T00:00:00 * Date/Time End: 2009-03-31T00:00:00 * Location: Florida

Comment:

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Lavigne et al, 2014) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation is 2014-05-27.

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Treatment	Treat		Okazaki, Remy
2	Date	Date		Okazaki, Remy
3	Species	Species		Okazaki, Remy
4	Identification	ID		Okazaki, Remy		coral
5	Aragonite saturation state	Omega Arg		Okazaki, Remy	Calculated using CO2SYS
6	Calcification rate of calcium carbonate	Calc rate CaCO3	mmol/m²/h	Okazaki, Remy	Alkalinity anomaly technique (Smith and Key, 1975)
7	Surface area	SA	cm²	Okazaki, Remy
8	Temperature, water	Temp	°C	Okazaki, Remy
9	Salinity	Sal		Okazaki, Remy
10	Net photosynthesis rate	PN	mmol/m²/h	Okazaki, Remy
11	Alkalinity, total	AT	µmol/kg	Okazaki, Remy	Potentiometric titration
12	pH	pH		Okazaki, Remy	Potentiometric	total scale
13	Carbonate system computation flag	CSC flag		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
14	Carbon dioxide	CO2	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
15	Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)	pCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
16	Fugacity of carbon dioxide (water) at sea surface temperature (wet air)	fCO2water_SST_wet	µatm	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
17	Bicarbonate ion	[HCO3]-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
18	Carbonate ion	[CO3]2-	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
19	Carbon, inorganic, dissolved	DIC	µmol/kg	Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
20	Aragonite saturation state	Omega Arg		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)
21	Calcite saturation state	Omega Cal		Yang, Yan	Calculated using seacarb after Nisumaa et al. (2010)

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

2975 data points

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